Spring motor



L. B. GRAHAM SRING MoToR Filed May 2e 1921 Patented Aug. V2 1, 1923.

. @Unirses'rArss insta Textarea LESLIE* VBf Gannett/r; or' EAST CHICAGO,VINQIANA, Assrs'non 'ro GRAHAM* WITTENBORN ooaronnl'rron, er CHICAGO,rLLrNors Immers.

i f SPRING IfIOTOR.-

T al? yurhmn t may concern; c' Y citizen of the United States ofAmerica, ref

- specification.

siding at East Chicago, ,in the county of Lake and State oflncliaiia,rhave invented certain new and useful improvements in Spring Hoteis ofwhich the following-1s aspring` motors, and the principall objects of myimprovements are: I A. y .Y First: yTo fpr vide aspring motorof lowcostin manufacture consistingvof few' gears,

whereby all partsmay be made by what is lniown as sheetrmetal stampingorscreW mafv chine Work; Y

Seco-nd: To provide af y'spring VVmotor g `whereby a partial rewindingof the spring may be. accomplished by its own power whileit isoperating. Y

My invention relates toiimprovementsY in spring motors, particularly vt0improvements in connection with the construction disclosed in my pendingapplication, Serial .$469,664 tiled May 14, 1921.

:M practical embodiment of the invention isillustrated in theaccompanying drawings 1 which are a. part hereof and in which lsimilarcharacters of reference indicate corresponding -parts in'all oftheviews.

The invention consists 'n ,.the'v novel features and parts and in thenovel combination and varrangement of the same, which will ybe morefully described hereinafter' and thus pointed outin the claimshereuntoappended, f

In lthe drawings:

Figure 1 is a sectional view of the entire motor.

Figure 2 is a plan view of the governor with the upper plates partlybroken away to show its construction,

Figure 3 is a partial section of the governor.

Figure 4 is a sect-ion throughout. the Winding device, showing therelease spring.

In Figure 1 the usual turntable is shown as at 5, mounted upon the shaft6, Which is supported in the frame 7, this frame being in turn supportedby the usual shelf 8. At 9 is shown a. stud securedin the frame7, as at10, provided for the purpose of supporting the spring barrel 11,together With its is in action'. 1

192i, semaine. 472,73@V

driving gears 12 and lL13.' lfliese'rgears 12 and 13,'are shown 1n meshwith p1nions14 A f loonronn'rron;"

andl, which are mountednpon tlieshaft 6. The pinions 14 Vand 15arefloosely mounted upon shaft@ and driven the teethl rand pa- Wis 16asecured to pinion 14 which is also mounted' loosely. upony shaft 6, forthe puropposite Adirections during reivinding of Y spring 117@ crank,not shown, which,maybe-attached to For rewinding inalreuserof the iislfi Y y pose of allowingv'thesefpinionshto. rotatein My invention relatesto improvements in' sections are held apart by thes'pring 20, preventingturning ofthecranlr While the motor ReWindingLis accomplished pressingthe crank inward until the'.clutch 19 isen- I l gaged, thenhyfrolt-ation of thefcranhthe rewinding pinion, as shown at 21',andwhich" meshes in a seriesof holes o f both gearsgvill.

cause the lgears 12and-13 to rotate in opposite vdirect-ions andcharge', spring 1 7, one end of which is attached to the b'arrelfll, andtheother e'ndto the sleeve22. Rotation ofthe gears 12-and 13 in oppositedirections Will also'cause pinions14 and 1 5 to rotatein reversetjoeac-h other.

Forming a part of 'the pinion 14, are'` the ratchet teeth` 23,theseteeth engaging Vthe paWls 24, provide a means forretaining thecharge of;` spring 17.A And as the Pinion 14 rotates clockwise duetoreceiving motion from the outer end of the spring 17 through thebarrelll, and gear 12, a Clockwise direction of rotation will beimparted 'tothe patvls 24, by the ratchet teeth 23 of pinion 14. Thesepawls will in turn impart a clockwise direction of rotation to the shaft6 through the disk 25 and key 26. To the pinion 14 the paWls 16a areattached, which in turn rotate the pinion 15 through the ratchet teeth16, that are formed integral With pinion 15. The pinion 15 being rotatedclockwise will also rotate the gear 13 counter-clockwiseand accomplish apartial reWinding of the spring 17, at its inner end through the sleeve22, to which the springs inner end is attached. Y

To attain a Yhigh ratio in revolutions of the shaft 6, t0 each turn 0fthe springs un- Winding, I make use of a difference of pitch diametersbetween the gears 12 and 13, and between the pinions 14 and15as'follows: Assume all of the gears to be of number 32 pitch, and thatthe gear 12 to have 170 teeth,

' gear- 13 to have 173A teeth, pinion 14 to have 23 teeth, and pinion 15to have 20 teeth.v Then aS the gear 12 makes one revolutionVcounter-clockwise it will cause the pinion 14 to rotate seven andfour-tenths turns in a clockwise direction; and pinion 15 will also makeseven and four-tenths turns clockwise which will in turn rotate the gear13 counter-clockwise through a distance of seven and four-tenths timestwenty, which would equal 148 teeth. Now as the gear 13has 173 teeth,it'will fall short of making one complete turn, by the distance of 25teeth. Therefore, if we divide'173 by 25, we get the result of sixand-nine-tenths. Then, to get the totalY number of rotations of theshaft 6, to one turn of the springs unwinding, we multiply seven andfour-tenths by six and nine-tenths, and get the result `of fifty-one',which would equal the number of revolutions of shaft 6 to each turn ofthe springs unwinding.`

If'desirech the governor shown'may be omitted and Athe usual fly balland spring type may be embodied I do not limit myself to theconstruction shown, but may embody two or more "springs together `with are-arrangement of the gearing to get the same 'results without departing'from my invention. -Having thus fully described my invention, what Iclaim as new and desire to secure by Letters Patent, is:

l. yIn a Spring motor, two gears of a dif- `ferentV pitch diameter, twopinions of a different pitch diameter meshing withthe two gears ofdifferent pitch diameters, and a spring yhaving one of its ends attachedto drive one of the gears of different pitch diameter, and its other endattached to the other` gear of different pitch diameter, means forpartially rewinding the power spring by its own power.n v

2. In a spring motor, two gears of different pitch diameters, and twopinions of different pitch diameters, both pinions mountupon anothershaft, means for driving one of the gears by one end of the powerspring,

and means for driving one end of the power spring by the other gear andthrough the pinions of'ditlerent pitch diameters.

3. In a spring motor, two gears of different pitch diameters, andrtwo'pinions of different pitch diameters, one of said gears being connectedto one endof aspring, and the other of SaidV gears being connected tothe otherend of said spring.

4. A spring motor driving a' power YreceivingY shaft through a pair ofgears, and 'a pair of gears receiving power from', the

powerreceivin'g shaft t0 partially rewind ed uponone shaft, and "bothgears mountedl the power spring, and a means for manually rewinding thepower spring; k

5. In a spring motor, va power source for Y driving a power receiving'shaft through a pair Yof gears, alpai-r of gears receiving' power'from'the power receiving shaft for partially rewinding the powersource, and 3 a means lfor controlling the speed of the power receivingshaft.

'6. In a spring motor-',twogears mounted upon a spring axis and twoother `gearsy mounted upon driven shaft, means for allowing the gears torotate in-theisame direcition, and means for allowing the gears torotate in opposite directions.

7. In a springV motor, Va spring havingboth of its ends `rotating'aboutits axis in the same direction during release of its power, a'shaftreceiving motion from oneV end ofthe spring, gearing for operating theshaft, and gearing for rotating the other end of the spring In testimonywhereof I ailix mv signature.

.LESLIE B. GrRAI-IAIVI.A

